The American Psychological Association (APA), the world’s largest organization of psychologists, voiced its strong support for marriage equality this month. The support came in the form of a resolution passed unanimously (157-0) by the APA’s Council of Representatives, its primary policy making body.

The resolution notes that “the denial of civil marriage, including the creation of legal statuses such as civil unions and domestic partnerships, stigmatizes same-sex relationships… and reinforces prejudice against lesbian, gay, and bisexual people,” and calls for state and federal laws providing full marriage equality to same-sex couples.